Imagining the Way of Sending and receiving Emails

I configure here a model of email provider’s computer and envision the acts of email sending, storing and referring to understand about them easily:

Imagine an empty chest. There are many white papers hung in it. The pages are connected to a remote email sender by ‘some way.’ The remote email sender writes (types) on this paper by ‘some way.’ This written matter is fixed and stored. The mail is also locked for viewing by the addressee only. When the addressee residing at a remote place keys in and unlocks he can now access and read this message sent by the remote sender, by ’some way.’

This chest is the mail provider’s server computer and the ‘some way’ is nothing but the Internet’s World Wide Web!